"HippoCampus is a project of the Monterey Institute for Technology and Education (MITE). The goal of HippoCampus is to provide high-quality, multimedia content on general education subjects to high school and college students free of charge.
HippoCampus was designed as part of Open Education Resources (OER), a worldwide effort to improve access to quality education for everyone. HippoCampus content has been developed by some of the finest colleges and universities in the world…"
an open source program that gives users the freedom to create their own online classroom. With Claroline teachers can produce assessment activities, post and collect assignments, build a wiki, monitor student activities, and create chat rooms or discussion forums. Claroline is available as a free download for Mac, Windows, and Linux systems. Claroline is not a hosted service so you do need to have someone host your installation of Claroline.